Just had relatively famous 1.1.3 bug happen in 1.3. Using two Docking ports Junior, after clicking "Undock", the option simply disappeared while the ports continued to hold the two vehicles together. No way clicking anywhere, exiting or switching anywhere would bring "Undock" option back. I have managed to find solution and fix it, by following this guide. To cut it short, find two entries that have "state = Disengage" and then replace one with "state = Docked (docker)", and another wit